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Experimental and analytic studies of coupled multiple stripe (CMS) phase-locked, room-temperature diode lasers are reported. Such devices generate high-power well-collimated beams, which potentially may be electronically scanned in the manner of phased array radar. For the tested devices with ten conducting 3 μm stripe contacts on centers separated byDand coupled by curved waveguide sections, data from four stripe geometries withDranging from 10 μm to 27. 4 μm are compared and overall optimal characteristics occur forD = 10. In that case, threshold current densities are comparable to solid area lasers, differential quantum efficiency is approximately 60 percent, and maximum observed pulsed power per facet is on the order of 1 W.
Scifres et al. (1979) studied this question.